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Tax Records is not the definitive source for square footage!

By Ryan Lundquist

Excerpt:

Why is the appraiser saying it’s only 1,400 sq ft? Tax Records shows the home is 600 sq ft larger. This issue comes up ALL the time, so let’s talk about it. Tax records and Square Footage in Appraisals is a hot topic.

The truth: The Assessor’s records are generally reliable, but I’m just saying sometimes they’re not. Why is this? At times it’s as simple as the original builder not turning in accurate information when a house was built. Or maybe an owner took out permits but official records were never updated. Of course we’ve all seen instances where the tax roll shows two units on one lot, but there’s really just one house nowadays. Let’s not forget sometimes owners do an addition without permits, so the Assessor might actually be correct even though the house is technically larger or has even sold on MLS as a larger home. For reference, here are ten reasons why an appraiser’s sketch might be different.

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My comment: This one of the main reasons that AVMs will never be very successful for all homes. Over and over again, statistical analysis shows GLA is the most important physical feature overall.

Also, how bedrooms are determined varies a lot, depending on the local market and can vary over time. The assessor number of bedrooms may not match the appraiser’s. For example, tandem rooms. Finished basements can vary also.

I started appraising at a CA assessor’s office in 1976. In CA, State Board of Equalization regulated county assessors offices, so the procedures and terminology are very similar all over the state. However, GLA from the assessor may have different requirements than other sources, such as ANSI.

Proposition 13 passed in 1979, which only allowed an annual 2% increase in assessment per year, unless there was a sale or improvements (determined by permits). Over time, the information has become more and more out of date.

Data is not available for smaller counties if the assessor says it is confidential. Until the 90s, my county did not release any data, so I had to “guesstimate” on square footage for sales and listings. We finally got it when an MAI was elected assessor.

In the early 90s, I researched assessors records around the country. In some small rural counties the records were kept at the assessor’s home. They were not digitized and available for purchase by data companies.

Appraisers need to know which areas are not accurate. Sometimes GLA is “political”. Within a city, accuracy can vary. In my city the least accurate records are in the “Gold Coast” with many of the city’s larger, historic homes. In other nearby cities, some properties have low GLAs to keep the property taxes lower.

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Appraisal business tips

What is Included in Appraisal Square Footage?(Opens in a new browser tab)

How accurate is the reported square footage from the tax records in your primary service area?(Opens in a new browser tab)

10 reasons why public records and the appraiser’s square footage can differ(Opens in a new browser tab)

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